US2970445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-energizing mechanical grippers and wedging ring assembly
Assignee: De Long Corp
•
Filing: 1956-02-21
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Granted: 1961-02-07
•
Expires: 1976-02-21
Abstract
No abstract record available.
Inventors
- 👤 George E Suderow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:46
CPC Classifications
E; E02; E02B; E02B17/00; E02B17/04; E02B17/08; E02B17/0836; Y; Y10; Y10S; Y10S285/00; Y10S285/92; Y10T; Y10T24/00; Y10T24/44; Y10T24/44068; Y10T74/00; Y10T74/18; Y10T74/18992
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB713298A
Cited
US1389867A
Cited
US1494585A
Cited
US2109546A
Cited
US2212572A
Cited
US2508835A
Cited
US2715013A
Cited
US2507127A
Cited
US2717663A
Cited
US2830788A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-07 | 1964-08-08 | 1965-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-07 | 1968-08-08 | 1969-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-07 | 1972-08-08 | 1973-02-07 | $7700.00 | Window Closed / Lapsed |